We have a public load balancer attached to the VM scale set of our Service Fabric Cluster. I have created a new internal private load balancer to attach to the VM's for better security. But when I go into Add in the Backend Pool configuration of the new private load balancer, the option to add the VM scale set is not there. In fact the screen looks different than the Add screen in the public load balancer: (the public load balancer has a dropdown menu for "Associated to" where you choose Virtual Machine Scale Set, whereas the private load balancer doesn't have that menu - it just has a virtual network dropdown and single Virtual Machine dropdown, and neither have what I need in their lists). I've attached two screenshots for reference.
My questions:
Is the reason I'm not seeing the option for the Service Fabric VM Scale Set in the private load balancer options because it's still attached to the public load balancer?
If not, how would I achieve this outside using the Portal?
If so, will I interrupt traffic to the Service Fabric Cluster if I remove the public load balancer from the VM scale set?
Finally, is there a way to just make the existing public load balancer private?
For your questions:
No, there are options difference between the basic and standard SKU load balancer in the web UI.
You could create an internal basic load balancer. Then associated the VMSS to the backend pool of new load balancer.
Since the access frontend IP change, it will interrupt traffic.
It's not possible to make the existing public load balancer private directly, you need to create a new internal load balancer, then reply the old load balancer configuration with the new one. Then remove the old one.
You can refer to this quickstart to create a Basic load balancer by using the Azure portal and select type Internal.
no, this is probably a UI limitation, you can have both internal and public load balancers attached to the same vmss\vm
yes, it will
no, there is no way of doing that
what you could do - attach internal load balancer, migrate traffic to that and detach public load balancer after that.
Related
I want to run my application with AKS cluster(version - 1.18.14) with the dependency of standard load balancer to create multiple node pools. But, the standard load balancer is creating public IP address. which is not suitable for my application. Because my application is private not public.
Is there any way to "create Standard load balancer without public IP address in Azure?"
Thanks.
Actually, when you create the AKS, it creates a public IP as the outbound IP address for the Load Balancer, and it's for the egress. So it does not affect that your application is private or public. Instead, what you need to focus on is inbound, if your application is private, you just need to use the internal Load Balancer, I think this is what you are looking for.
I have an existing virtual machine scale set. Currently I have one virtual machine there. I would like to update the scale set and add a public IP to the virtual machine or somehow create a load balancer that will allow me to "access" the virtual machine from the outside. I am new to azure so I have no idea how it all works.
Any ideas/help will be appreciated, Thanks!
You can create a load balancer with the public IP, then add the virtual machine scale set into the backend pool of the load balancer. Finally, create the NAT rules for each instance. Create the load balancer following the steps in Create a Basic Load Balancer by using the Azure portal.
Hoping someone can help here, is there any specific option i need to be aware off that will make the azure standard load balancer picks up (show) a availability set in the backend pool configuration?
Basically, I have created a AS and it has one vm (for now), and then I created the azure "internal" load balancer with Standard SKU but when i try to create a bep it only provides an option of virtual network in the drop down list with respect to the associations.
I tried to create the load balancer inside the same RG as the availability set RG because on this site i read someone mentioning this as a possible solution.
I have no problem picking up the same AS when i create the ILB using basic SKU. So I'm wondering what is needed to make this working for the standard SKU?
Any help much appreciated.
For the backend pool of load balancer, you can directly associate to the AS, a scale set or a VM for a basic SKU LB. While a standard LB is fully integrated with the scope of a virtual network and all virtual network concepts apply. So you only need to select one virtual network, the VMs inside the VNET will show up in the drop list.
Note: Only VMs in the same region with standard SKU public IP or no public IP can be attached to this load balancer.
If you have not see the VMs in the drop list, you can disable the public IP address of VMs or attach a standard SKU public Ip address to your VMs, then try to add the backend pool to your standard LB again.
Ref: https://learn.microsoft.com/en-us/azure/load-balancer/load-balancer-standard-overview
I created a Scale Set (using a template) with an existing virtual network.
This existing virtual network has already a Load Balancer (with a public IP) with specific VMs.
Now, I can't connect to the VMs in the scale set, There's no option to add the scale set to the Load Balancer or to add the scale set's VMs to the Load Balancer. Creating a new Load Balancer doesn't help.
It seems that the only option for adding a backend pool is using an availability set or a single VM (which is not in the Scale Set).
Is there any way to solve this? to somehow add the Scale Set to the Load Balancer or to connect to it?
The goal was to create the scale set to be in the existing Load Balancer (in the network with the other VMs), but unfortunately it didn't work.
It is not posible to add vms in different availability sets to the same lb. VMSS has its own availability set (by desing). so this is not possible.
https://social.msdn.microsoft.com/Forums/sqlserver/en-US/ccf69a9c-0a6a-47bc-afca-561cf66cdebd/multiple-availability-sets-on-single-load-balancer?forum=WAVirtualMachinesVirtualNetwork
You can work around by creating vm in the network that will act as a load balancer, but that's obviously not a PAAS solution
The goal was to create the scale set to be in the existing Load
Balancer (in the network with the other VMs), but unfortunately it
didn't work.
It is not possible and no need. Please refer to this official document. Azure VMSS instances are behind a load balancer. Also VMSS's intance could not add to a existing load balancer.
Now, I can't connect to the VMs in the scale set.
Do you create inbound NAT rules for your instance? Also, you could create a jump VM in the same VNet to login one instance. See this question.
If you could not login your VM from a jump VM, it is not a VMSS issue. You should check your instance. If you don't do any change for your instances. You could create a ticket to Azure to solve this issue.
We have multiple background worker vmss that do not need a public IP to work.
I want to be able to connect to arbitrary vm (e.g. to troubleshoot via rdp, or to collect some snapshots using remote profiler etc).
When there's only one VMSS per load balancer all works like a charm. I've setup nat pools for each port used on VMs and all works fine.
Now, if I'm trying to add one more vmss to the same load balancer (using its own nat / backend pools) the deployment fails with
Virtual Machine /subscriptions/.../resourceGroups/.../providers/Microsoft.Compute/virtualMachines/|providers|Micr
osoft.Compute|virtualMachineScaleSets|...|virtualMachines|0 is using different Availability Set than other Virtual Machines connected to the Load Balancer(s) ...
message.
As far as I know there's no way to set up availability set for vmss. Are there any options but keeping own load balancer/public ip for each VMSS?
UPD I've found similar scheme for VM+Availability Set setup (see ILB endpoint section).
Something like this for VMSS?
Your are right, we can't change availability set for vmss.
if I'm trying to add one more vmss to the same load balancer
As we know, we can't add different availability sets to single load balancer, so we can't add one or more VMSS to the same load balancer.
Are there any options but keeping own load balancer/public ip for each
VMSS?
We have multiple background worker vmss that do not need a public IP
to work.
Are those VMss in same VNet? If yes, we can deploy a new VM in the same Vnet, we can connect to this VM, then use this VM to connect to VMSS instances with internal IP addresses, in this way, this new VM work as a jumpbox. we can use this jumpbox to troubleshoot.
Update:
Is it possible then to have multiple vmss in same VNet and assign own
public api/load balancer for each of it?
Yes, we can create a new Azure VM with public IP, then install HAproxy on it, make this VM work as a load balancer, add all VMSS instances which in the same Vnet to HAproxy backend pool, in this way, we can access this VM's public IP address + your NAT port to connect VMss instance.